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path: root/drivers/gpu/drm/gma500/oaktrail_hdmi.c
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Diffstat (limited to 'drivers/gpu/drm/gma500/oaktrail_hdmi.c')
-rw-r--r--drivers/gpu/drm/gma500/oaktrail_hdmi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/oaktrail_hdmi.c b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
index 36878a60080d..025d30970cc0 100644
--- a/drivers/gpu/drm/gma500/oaktrail_hdmi.c
+++ b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
@@ -506,6 +506,7 @@ int oaktrail_crtc_hdmi_mode_set(struct drm_crtc *crtc,
static int oaktrail_hdmi_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ struct drm_psb_private *dev_priv = connector->dev->dev_private;
if (mode->clock > 165000)
return MODE_CLOCK_HIGH;
if (mode->clock < 20000)
@@ -514,6 +515,11 @@ static int oaktrail_hdmi_mode_valid(struct drm_connector *connector,
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
+ /* We assume worst case scenario of 32 bpp here, since we don't know */
+ if ((ALIGN(mode->hdisplay * 4, 64) * mode->vdisplay) >
+ dev_priv->vram_stolen_size)
+ return MODE_MEM;
+
return MODE_OK;
}